<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <section id="topoapp">
        <header class="header"> 
            <h1>小黑记事本</h1>
            <input v-model="inputValue" @Keyup.enter="add" autofocus="autofocus" autocomplete="off" placeholder="请输入任务" class="new-todo">
        

        </header>
        <section class="main">
            <ul class="todo-list">
                <li class="todo" v-for="(item,index) in">
                    <div class="view">
                        <span class="index">{{index+1}}</span>
                        <label >{{item}}</label>
                        <button class="destroy" @click="remove(index)"></button>
                    </div>
                </li>
            </ul>
        </section>
    </section>
    <footer class="footer" v-show="list.lengrh!=0">
        <span class="todo-count" v-if="list.length!=0"><strong>{{list.length}}</strong>items left</span>
        <button v-show="list.length!=0" class="clear-completed" @click="clear">Clear</button>
    </footer>
    <script>
        var app = new Vue({
            el:"#todoapp",
            data:{
                list:["写代码","吃饭饭","睡觉觉"],
                inputValue:"好好学习,天天向上"
            },
            methods:{
                add:function(){
                    this.list.push(this.inputValue);
                },
                remove:function(){
                    this.list.splice(index,1);
                },
                clear:function(){
                    this.list=[];
                }
            }
        })
    </script>
</body>
</html>